There are several public campsites at Seronera in the Central Serengeti, each one of which has a capacity of perhaps 50 tents.
These are noisy, busy places, often with large overland trucks and other low budget safari groups.
If you are being offered a safari which includes public campsites then you need to be aware that you are really on the bottom rung of the ladder.
We do not use these campsites.